Ver 1.5

17/03/29

19

ES166

LCR/DMM analog front

2.8 Low battery detection

ES166 provides the low battery detection circuit for two cases. If 3V (1.5V*2) battery

is used, connect LBAT (pin53) terminal to AGND directly. The default typical

low-battery threshold voltage is –2.3V (V- to AGND).

If more than 3V battery is used, the low battery status flag is active when the voltage of

this pin is less than VRH voltage (Typ. -1.23V).

For examples:

9V battery configuration is used